feat: travel service with 2GIS routing, POI, hotels + finance providers + UI overhaul

- Add travel-svc microservice (Amadeus, TravelPayouts, 2GIS, OpenRouteService)
- Add travel orchestrator with parallel collectors (events, POI, hotels, flights)
- Add 2GIS road routing with transport cost calculation (car/bus/taxi)
- Add TravelMap (2GIS MapGL) and TravelWidgets components
- Add useTravelChat hook for streaming travel agent responses
- Add finance heatmap providers refactor
- Add SearXNG settings, API proxy routes, Docker compose updates
- Update Dockerfiles, config, types, and all UI pages for consistency

Made-with: Cursor

backend/cmd/finance-heatmap-svc/main.go

@@ -15,6 +15,7 @@ import (
 
 func main() {
 	heatmapSvc := finance.NewHeatmapService(finance.HeatmapConfig{
+		DataProviderURL: os.Getenv("FINANCE_DATA_PROVIDER_URL"),
 		CacheTTL:        5 * time.Minute,
 		RefreshInterval: time.Minute,
 	})